[Emc-users] New Reprap name.
http://www.reprappro.com/new-electronics-new-reprap-new-distributor/ Apparently named after an entomologist. But the mechanism is very similar to: http://www.lathes.co.uk/ormerodhandshaper/ More than coincidence? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 10 December 2013 05:32, Gregg Eshelman g_ala...@yahoo.com wrote: A very nice surprise was the lot included a Kennametal Erickson quick change spindle from a Bridgeport. The guy had swapped it for an R8 spindle That's just perverse! -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] New Reprap name.
On 12/10/2013 03:05 AM, andy pugh wrote: http://www.reprappro.com/new-electronics-new-reprap-new-distributor/ Apparently named after an entomologist. But the mechanism is very similar to: http://www.lathes.co.uk/ormerodhandshaper/ More than coincidence? In thinking about a better RepRap I remembered Lindsay Books and visited the website -- crud, they are retired, that's sad. http://www.lindsaybks.com/ Gingery seems to be active: http://www.gingerybookstore.com/ -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Delon Doubler
On 21 October 2013 18:21, Les Newell les.new...@fastmail.co.uk wrote: A trick to get around this is to use a 24V transformer to buck the mains down to 216V. Add the voltage doubler after that and your DC is spot on. You seem to understand transforners :-) I am wondering what I can do with this one, that I found in a skip. Ideally I would like a 100V isolated supply, just to be a bit less scary when messing about with servo motors. (Rectified UK mains is 300V + ) This is the label on top: https://drive.google.com/file/d/0BxjJW1-T6n7Cd2FrOWV5R3dRZnFhV2xrV0F3OHp3UW05X2NF/edit?usp=sharing -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 6:16 AM, andy pugh wrote: On 10 December 2013 05:32, Gregg Eshelman g_ala...@yahoo.com wrote: A very nice surprise was the lot included a Kennametal Erickson quick change spindle from a Bridgeport. The guy had swapped it for an R8 spindle That's just perverse! I'd go a bit further and say that was crazy! Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Delon Doubler
On 12/10/2013 11:58 AM, andy pugh wrote: On 21 October 2013 18:21, Les Newell les.new...@fastmail.co.uk wrote: A trick to get around this is to use a 24V transformer to buck the mains down to 216V. Add the voltage doubler after that and your DC is spot on. You seem to understand transforners :-) I am wondering what I can do with this one, that I found in a skip. Ideally I would like a 100V isolated supply, just to be a bit less scary when messing about with servo motors. (Rectified UK mains is 300V + ) This is the label on top: https://drive.google.com/file/d/0BxjJW1-T6n7Cd2FrOWV5R3dRZnFhV2xrV0F3OHp3UW05X2NF/edit?usp=sharing That could work. The bottom two bars with the numbers under them represent the Primary windings and the associated taps. The top two bars represent the secondary windings. The Verbdg is the connections needed to make to get the desired voltage out of the secondary when applying voltage to the primary. So for instance, if you connect terminals 20 and 26, and 23 and 28 together and apply 220 volts to those two nodes (incoming power). And connect 37 to 39 and 36 to 38 (wiring the secondary coils in parallel), then you will have 110 VAC power available at terminals 37 and 36. To further lower the secondary voltage you may be able to fully parallel the primary by connecting 20-25 and 24 to 28, but there may be some reason why that cannot be done. The diagram does not show that.You could try it, but I'd put a circuit breaker in each primary winding connection (you will need two) just in case there is a problem doing that, then power up the transformer with no load and put a clamp on ammeter on each primary winding to make sure you don't have some circulating currents. The breakers are a just in case so the transformer doesn't melt down in case that is an incorrect connection. Having some circuit breakers on the primary feed is also a good idea in case this transformer was discarded due to failure. Safety glasses are advised. :-) Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] New Reprap name.
On 12/10/2013 11:11 AM, Kirk Wallace wrote: On 12/10/2013 03:05 AM, andy pugh wrote: http://www.reprappro.com/new-electronics-new-reprap-new-distributor/ Apparently named after an entomologist. But the mechanism is very similar to: http://www.lathes.co.uk/ormerodhandshaper/ More than coincidence? In thinking about a better RepRap I remembered Lindsay Books and visited the website -- crud, they are retired, that's sad. http://www.lindsaybks.com/ Gingery seems to be active: http://www.gingerybookstore.com/ Lindsay books now being sold by: http://www.youroldtimebookstore.com/ --Tim -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
Im not sure I'd go that far (and Im an owner of both). NMTB/QC30 has positive drive but a R8 power drawbar absolutely whoops QC30 in tool change speed ease. Push button vs having to yank on a wrench both in and out. Its not really an improvement. SMD On Tue, Dec 10, 2013 at 12:10 PM, Dave Cole linuxcncro...@gmail.com wrote: On 12/10/2013 6:16 AM, andy pugh wrote: On 10 December 2013 05:32, Gregg Eshelman g_ala...@yahoo.com wrote: A very nice surprise was the lot included a Kennametal Erickson quick change spindle from a Bridgeport. The guy had swapped it for an R8 spindle That's just perverse! I'd go a bit further and say that was crazy! Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 10 December 2013 17:56, Stephen Dubovsky smdubov...@gmail.com wrote: Im not sure I'd go that far (and Im an owner of both). NMTB/QC30 has positive drive but a R8 power drawbar absolutely whoops QC30 in tool change speed ease. How long does it take to lower the table far enough to extract 4.5' of R8? I admit I wasn't considering the possibility of it being a powered R8, and was assuming that the 30-taper would be as convenient (or nearly so) as my BT30 spindle. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
well it might be faster for one tool jobs but 5 or 6 tools already touched off might make the qc a better choice Terry On Dec 10, 2013, at 11:56 AM, Stephen Dubovsky smdubov...@gmail.com wrote: Im not sure I'd go that far (and Im an owner of both). NMTB/QC30 has positive drive but a R8 power drawbar absolutely whoops QC30 in tool change speed ease. Push button vs having to yank on a wrench both in and out. Its not really an improvement. SMD On Tue, Dec 10, 2013 at 12:10 PM, Dave Cole linuxcncro...@gmail.com wrote: On 12/10/2013 6:16 AM, andy pugh wrote: On 10 December 2013 05:32, Gregg Eshelman g_ala...@yahoo.com wrote: A very nice surprise was the lot included a Kennametal Erickson quick change spindle from a Bridgeport. The guy had swapped it for an R8 spindle That's just perverse! I'd go a bit further and say that was crazy! Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. So while you can change tools quickly, how much time does re-referencing the Z axis use on repetitive parts? Dave On 12/10/2013 12:56 PM, Stephen Dubovsky wrote: Im not sure I'd go that far (and Im an owner of both). NMTB/QC30 has positive drive but a R8 power drawbar absolutely whoops QC30 in tool change speed ease. Push button vs having to yank on a wrench both in and out. Its not really an improvement. SMD On Tue, Dec 10, 2013 at 12:10 PM, Dave Cole linuxcncro...@gmail.com wrote: On 12/10/2013 6:16 AM, andy pugh wrote: On 10 December 2013 05:32, Gregg Eshelman g_ala...@yahoo.com wrote: A very nice surprise was the lot included a Kennametal Erickson quick change spindle from a Bridgeport. The guy had swapped it for an R8 spindle That's just perverse! I'd go a bit further and say that was crazy! Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] New Reprap name.
On 12/10/2013 12:42 PM, Tim Voght wrote: On 12/10/2013 11:11 AM, Kirk Wallace wrote: On 12/10/2013 03:05 AM, andy pugh wrote: http://www.reprappro.com/new-electronics-new-reprap-new-distributor/ Apparently named after an entomologist. But the mechanism is very similar to: http://www.lathes.co.uk/ormerodhandshaper/ More than coincidence? In thinking about a better RepRap I remembered Lindsay Books and visited the website -- crud, they are retired, that's sad. http://www.lindsaybks.com/ Gingery seems to be active: http://www.gingerybookstore.com/ Lindsay books now being sold by: http://www.youroldtimebookstore.com/ --Tim I ordered book reprints from Lindsay before he was on the internet.. as in before the internet. He basically worshiped Dave Gingery in his catalog.. and he sold a ton of Gingery books. http://www.lindsaybks.com/ - it appears that Lindsay retired. Gingery died. http://gingerybooks.com/DaveGingeryEssay.html I found some of his books interesting and some just downright silly. Like how to make a lathe out of , a scrap Detroit Diesel piston and three roller skates. Or I could buy a scrap lathe frame for $20.. and start there.. Hmmm Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 10:50 AM, Dave Cole wrote: I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. So while you can change tools quickly, how much time does re-referencing the Z axis use on repetitive parts? Dave On 12/10/2013 12:56 PM, Stephen Dubovsky wrote: Im not sure I'd go that far (and Im an owner of both). NMTB/QC30 has positive drive but a R8 power drawbar absolutely whoops QC30 in tool change speed ease. Push button vs having to yank on a wrench both in and out. Its not really an improvement. SMD My random thoughts. I have just started using the R8/Tormach toolholding system and find it far more convenient than plain R8. Changes are as fast as grab a wrench, loosen draw bar enough to slide tool holder out, put next holder in, tighten, done. It features repeatable Z offsets, and offsets can also be set off the machine without a special tool holder holder. A power draw bar really isn't needed unless one has an automatic tool changer. The only down side might be that R8 is not as strong as 30 taper, but the Tormach version is stronger than plain R8. I would, given a large budget, prefer 30 or 40 taper with a power draw bar. I believe a Quick Change spindle can be drilled to use normal (CAT, BT, NMTB) taper holders with a draw bar. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Delon Doubler
On Tuesday 10 December 2013 14:55:24 andy pugh did opine: On 21 October 2013 18:21, Les Newell les.new...@fastmail.co.uk wrote: A trick to get around this is to use a 24V transformer to buck the mains down to 216V. Add the voltage doubler after that and your DC is spot on. You seem to understand transforners :-) I am wondering what I can do with this one, that I found in a skip. Ideally I would like a 100V isolated supply, just to be a bit less scary when messing about with servo motors. (Rectified UK mains is 300V + ) Or about 215 volts rms, 50hz I assume? This is the label on top: https://drive.google.com/file/d/0BxjJW1-T6n7Cd2FrOWV5R3dRZnFhV2xrV0F3OHp 3UW05X2NF/edit?usp=sharing This label can be a bunch ambiguous. But with the top wired in parallel, feeding one side to terms 39 and 37, and the other side to 36-38, one would assume the secondaries can then be probed to see which could be used to obtain the voltage you need. Basically two warnings apply. Don't seriously overvoltage the primary else the iron will become saturated magnetically at the peak voltage and when that happens the input current rises dramatically and heating destruction can occur. I see it has a 1050VA rating, or nominally 1 kilowatt in round figures. The iron saturation point isn't a generally published spec but can usually take a 15 to 25% overvoltage condition in well built transformers. I ran my mill for years on an old tranny from a 2 tape machine, feeding the 127 volt primary voltage we get here in the US of Hay, to the primary terminals labeled for a 90 volt feed, in order to get 29.5 volts for the motors out of the 24 volt winding when using a choke input filter. No noticeable heating of that 50+yo well potted hunk of iron, but that is pushing the envelope looking for the smoke vent with more modern iron. This transformer in the pix, can also handle a nominally 440 volt feed by shorting 37-38 together, and feeding the line rails to 36 39. This would divide the secondary voltages by 2. They could have labeled it better though, and I doubt if an English label would remove any of the ambiguity. If that was available as surplus, I'd take a couple of them. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Genes Web page http://geneslinuxbox.net:6309/gene Better dead than mellow. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Delon Doubler
On Tuesday 10 December 2013 15:19:27 Dave Cole did opine: On 12/10/2013 11:58 AM, andy pugh wrote: On 21 October 2013 18:21, Les Newell les.new...@fastmail.co.uk wrote: A trick to get around this is to use a 24V transformer to buck the mains down to 216V. Add the voltage doubler after that and your DC is spot on. You seem to understand transforners :-) I am wondering what I can do with this one, that I found in a skip. Ideally I would like a 100V isolated supply, just to be a bit less scary when messing about with servo motors. (Rectified UK mains is 300V + ) This is the label on top: https://drive.google.com/file/d/0BxjJW1-T6n7Cd2FrOWV5R3dRZnFhV2xrV0F3O Hp3UW05X2NF/edit?usp=sharing That could work. The bottom two bars with the numbers under them represent the Primary windings and the associated taps. The top two bars represent the secondary windings. The Verbdg is the connections needed to make to get the desired voltage out of the secondary when applying voltage to the primary. So for instance, if you connect terminals 20 and 26, and 23 and 28 together and apply 220 volts to those two nodes (incoming power). And connect 37 to 39 and 36 to 38 (wiring the secondary coils in parallel), then you will have 110 VAC power available at terminals 37 and 36. To further lower the secondary voltage you may be able to fully parallel the primary by connecting 20-25 and 24 to 28, but there may be some reason why that cannot be done. The diagram does not show that.You could try it, but I'd put a circuit breaker in each primary winding connection (you will need two) just in case there is a problem doing that, then power up the transformer with no load and put a clamp on ammeter on each primary winding to make sure you don't have some circulating currents. The breakers are a just in case so the transformer doesn't melt down in case that is an incorrect connection. Having some circuit breakers on the primary feed is also a good idea in case this transformer was discarded due to failure. Safety glasses are advised. :-) Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.cl ktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Dave, you probably have it better than I do. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Genes Web page http://geneslinuxbox.net:6309/gene Caller: I just installed Windows 95 on my computer. Tech Support: And...? Caller: It's not working. Tech Support: You already said that. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 10 December 2013 20:13, Kirk Wallace kwall...@wallacecompany.com wrote: I would, given a large budget, prefer 30 or 40 taper with a power draw bar. My power draw-bar cost me £40, and half of that was because I decided to anodise the parts. (My mill was 30 INT as delivered, and is now using BT30 tooling) The Tormach power drawbar system for TTS looks reasonably easy to copy. I hated the time spent to operate the MT3 spindle on the previous mill out of all proportion to the time it actually took. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On Tuesday 10 December 2013 15:55:29 andy pugh did opine: On 10 December 2013 20:13, Kirk Wallace kwall...@wallacecompany.com wrote: I would, given a large budget, prefer 30 or 40 taper with a power draw bar. My power draw-bar cost me £40, and half of that was because I decided to anodise the parts. (My mill was 30 INT as delivered, and is now using BT30 tooling) The Tormach power drawbar system for TTS looks reasonably easy to copy. I hated the time spent to operate the MT3 spindle on the previous mill out of all proportion to the time it actually took. Agreed Andy, my MT2 is a PIMA. And hell on spindle bearings since you have to seriously beat the drawbolt to loosen it. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Genes Web page http://geneslinuxbox.net:6309/gene One of the most overlooked advantages to computers is... If they do foul up, there's no law against whacking them around a little. -- Joe Martin A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Four cable CNC with LCNC. Someone finally did it.
Hi Viesturs Paused at 0:57 and I see 7 ropes. Right, I didn't notice this. Maybe the plan was to have 8 but one of the drives died. :-) And at 3:17 I certainly do no understand, what kind of g-code is that, it seems to use G01 and G02, but the axis words seem strange. Indeed, looks strange. Are those meant to be some parameters? Maybe taught points. Reminds me of a array of taught locations in a KRL Kuka robot program. cu Flo -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Delon Doubler
On 12/10/2013 3:18 PM, Gene Heskett wrote: On Tuesday 10 December 2013 14:55:24 andy pugh did opine: On 21 October 2013 18:21, Les Newell les.new...@fastmail.co.uk wrote: A trick to get around this is to use a 24V transformer to buck the mains down to 216V. Add the voltage doubler after that and your DC is spot on. You seem to understand transforners :-) I am wondering what I can do with this one, that I found in a skip. Ideally I would like a 100V isolated supply, just to be a bit less scary when messing about with servo motors. (Rectified UK mains is 300V + ) Or about 215 volts rms, 50hz I assume? This is the label on top: https://drive.google.com/file/d/0BxjJW1-T6n7Cd2FrOWV5R3dRZnFhV2xrV0F3OHp 3UW05X2NF/edit?usp=sharing This label can be a bunch ambiguous. But with the top wired in parallel, feeding one side to terms 39 and 37, and the other side to 36-38, one would assume the secondaries can then be probed to see which could be used to obtain the voltage you need. Basically two warnings apply. Don't seriously overvoltage the primary else the iron will become saturated magnetically at the peak voltage and when that happens the input current rises dramatically and heating destruction can occur. I see it has a 1050VA rating, or nominally 1 kilowatt in round figures. The iron saturation point isn't a generally published spec but can usually take a 15 to 25% overvoltage condition in well built transformers. I ran my mill for years on an old tranny from a 2 tape machine, feeding the 127 volt primary voltage we get here in the US of Hay, to the primary terminals labeled for a 90 volt feed, in order to get 29.5 volts for the motors out of the 24 volt winding when using a choke input filter. No noticeable heating of that 50+yo well potted hunk of iron, but that is pushing the envelope looking for the smoke vent with more modern iron. This transformer in the pix, can also handle a nominally 440 volt feed by shorting 37-38 together, and feeding the line rails to 36 39. This would divide the secondary voltages by 2. They could have labeled it better though, and I doubt if an English label would remove any of the ambiguity. If that was available as surplus, I'd take a couple of them. Cheers, Gene Good point about saturating the iron via overvoltage.That probably explains why I melted some 14 gauge wire several years ago.. in a test connection. Andy said he got the transformer out of a skip which I believe translates to dumpster. As in dumpster diving. A sport in which I am well versed. ;-) Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On Tue, Dec 10, 2013 at 1:50 PM, Dave Cole linuxcncro...@gmail.com wrote: I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. Why? R8 uses a taper angle of 16.85deg. NMTB/QC30 uses 16.5943deg [both from wikipedia]. Both of them the taper face is the gauge line (they don't seat on a flat face or anything.) Both have 1.25 max taper diameters. They are basically identical. So if you can get repeatable pull/torque both should seat just as repeatably. SMD -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] C2000 vfd + AC inductor motor + LinuxCNC
Well. I have some good news at leat based on my experience tuning servos. I mounted the motor and now is working moving the screw (this is a SAE 1045 steel screw with a nut made out of nylon 6). Doing a quick tuning today I got a 0.2 mm of error and the oscillation stoped when the joint reached the position. The only thing is that I'm getting vibrations during the moving of the joint. I know I need more tuning but may be there are some tips for this. Also I'm working at 3000 mm/m wich is half the velocity I expect but I don't have complains so far. Thanks as always! 2013/12/6 Leonardo Marsaglia leonardomarsagli...@gmail.com I will try it with load tomorrow or next monday, because I'm finishing with the encoder coupling for the screw. I never tried the autotunning but it is supposed to tune all the motor parameters to get better torque. I hope that helps to improve the positioning. Anyway as I told before I don't need centesimal accuraty, but now I need to ged rid of that oscillation that doesn't stop. I will try and see what happens the I'll tell you. Off course I'll be uploading some videos when it's working :). Thanks as always! 2013/12/6 Jon Elson el...@pico-systems.com On 12/05/2013 09:35 PM, Leonardo Marsaglia wrote: 2013/12/5 Jon Elson el...@pico-systems.com Is this a flux vector drive, or a standard VFD? A flux-vector drive can perform the computations to keep the rotor excited without moving it. A standard VFD cannot, it has to move the motor to excite the induced field in the rotor. So, it will keep dancing. It says that is a FOC (field oriented control) ac drive, so I guess it's not a standard VFD. Anyway it has a lot of options even an autotunning feature so may be I'ts not well configured to get the maximum out of it. Now I have set it to work only with +/- 10 volts and without any acceleration or breaking assistance, so all the acceleration a deceleration it's done by the PID of LinuxCNC. Ah, then do the autotune and turn off most of the PID features in LinuxCNC. Don't use any I, a low P value and just a little D, and no FFx. Let the drive do most of the hard work. You will probably need to redo the autotune when the motor is connected to a load. Jon -- Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- *Leonardo Marsaglia*. -- *Leonardo Marsaglia*. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Delon Doubler
On Tuesday 10 December 2013 17:28:10 Dave Cole did opine: On 12/10/2013 3:18 PM, Gene Heskett wrote: On Tuesday 10 December 2013 14:55:24 andy pugh did opine: On 21 October 2013 18:21, Les Newell les.new...@fastmail.co.uk wrote: A trick to get around this is to use a 24V transformer to buck the mains down to 216V. Add the voltage doubler after that and your DC is spot on. You seem to understand transforners :-) I am wondering what I can do with this one, that I found in a skip. Ideally I would like a 100V isolated supply, just to be a bit less scary when messing about with servo motors. (Rectified UK mains is 300V + ) Or about 215 volts rms, 50hz I assume? This is the label on top: https://drive.google.com/file/d/0BxjJW1-T6n7Cd2FrOWV5R3dRZnFhV2xrV0F3 OHp 3UW05X2NF/edit?usp=sharing This label can be a bunch ambiguous. But with the top wired in parallel, feeding one side to terms 39 and 37, and the other side to 36-38, one would assume the secondaries can then be probed to see which could be used to obtain the voltage you need. Basically two warnings apply. Don't seriously overvoltage the primary else the iron will become saturated magnetically at the peak voltage and when that happens the input current rises dramatically and heating destruction can occur. I see it has a 1050VA rating, or nominally 1 kilowatt in round figures. The iron saturation point isn't a generally published spec but can usually take a 15 to 25% overvoltage condition in well built transformers. I ran my mill for years on an old tranny from a 2 tape machine, feeding the 127 volt primary voltage we get here in the US of Hay, to the primary terminals labeled for a 90 volt feed, in order to get 29.5 volts for the motors out of the 24 volt winding when using a choke input filter. No noticeable heating of that 50+yo well potted hunk of iron, but that is pushing the envelope looking for the smoke vent with more modern iron. This transformer in the pix, can also handle a nominally 440 volt feed by shorting 37-38 together, and feeding the line rails to 36 39. This would divide the secondary voltages by 2. They could have labeled it better though, and I doubt if an English label would remove any of the ambiguity. If that was available as surplus, I'd take a couple of them. Cheers, Gene Good point about saturating the iron via overvoltage.That probably explains why I melted some 14 gauge wire several years ago.. in a test connection. Andy said he got the transformer out of a skip which I believe translates to dumpster. As in dumpster diving. A sport in which I am well versed. ;-) Dave Quite familiar with the technique. My fav dumpster is about 80 acres worth, 25 miles east of me, belongs to an ex, now retired employee of the stations. If he hasn't got it, its only because his pickup wasn't big enough to haul it when it was free. Since I was his boss for nearly 20 years, even refused to fire him on one occasion because he was a pretty good maker for me, I have to force him to take my money, usually for far less than its worth. If I need some clean cherry or mahogany in 2' pieces, I've hauled off a ton or so for zip. He gets it out of the burn piles at a couple furniture makers hidden here and there up unmarked gullies, trying to get it before they stick a pint of k2 and a match in it. I've made a couple maple gunstocks, and some mahogany furniture for me, and the maple was all I paid for. He'd bought a huge slab with the idea of making his own guitar, didn't know it needed waxed to slow the drying so it wouldn't split, but stuck it into the hot air exhaust of the transmitter for about a month. Of course it split like crazy. So I gave him a 20, took it home stood it in the corner for about a decade. Couldn't cut into it for splits, finally cut a good sized piece for a rifle stock, sealed it in a 60 by 8 section of sewer pipe pulled a hard vaccum on it for about 6 months. Couple hairline cracks I worked some superglue into, and now its thumbhole style with my TC black diamond BP rifle snoozing in it. Gets ooohs and aahhs at the range when I bring it out. That WAS the general idea. That and a couple other details have made a 1.25 grouper at 50 yards out of it, good considering that when I bought it originally, a 6 group at 25 yards was a good day. One of the toy's he has sitting out in the weather is the welded frame of a low band diplexer assembly, about 4 feet deep, 6 feet high and 5 feet wide, 4 heliarc welded alu angle. Looks like it would make one hell of a maker- bot frame. But I'd have to build a building for it and I'm darned near out of real estate I can put more roof over. But I stand and stare at it drooling slightly, every time I go over to see what he has that I can use for one of my current projects. He also has some huge, but probably peanut
Re: [Emc-users] Acra CNC refit progress.
tcninj...@yahoo.com wrote: well it might be faster for one tool jobs but 5 or 6 tools already touched off might make the qc a better choice Terry I have a 200 Kwik Switch on my Wells Index, would not trade it for any amount of R8. Like the cat series it is a lot shorter for tool changes. The tool table is your friend. Ed. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
Stephen Dubovsky wrote: On Tue, Dec 10, 2013 at 1:50 PM, Dave Cole linuxcncro...@gmail.com wrote: Why? R8 uses a taper angle of 16.85deg. NMTB/QC30 uses 16.5943deg [both from wikipedia]. Both of them the taper face is the gauge line (they don't seat on a flat face or anything.) Both have 1.25 max taper diameters. They are basically identical. So if you can get repeatable pull/torque both should seat just as repeatably. SMD If you use solid tool holders instead of collets then you will have repeatability. The disadvantage then is the length of the tool holder in toolchange situations. Ed. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 4:55 PM, Stephen Dubovsky wrote: On Tue, Dec 10, 2013 at 1:50 PM, Dave Cole linuxcncro...@gmail.com wrote: I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. Why? R8 uses a taper angle of 16.85deg. NMTB/QC30 uses 16.5943deg [both from wikipedia]. Both of them the taper face is the gauge line (they don't seat on a flat face or anything.) Both have 1.25 max taper diameters. They are basically identical. So if you can get repeatable pull/torque both should seat just as repeatably. SMD -- Oops.. you are exactly correct. I was thinking about something else. Thanks for the correction. I was happy to get the Ericson spindle on my Bridgeport since I didn't want to have to climb to the top to get to a drawbar. Being able to stay on the floor is an advantage and no need for a power drawbar. One less thing to screw up. Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On Tue, 12/10/13, Kirk Wallace kwall...@wallacecompany.com wrote: My random thoughts. I have just started using the R8/Tormach toolholding system and find it far more convenient than plain R8. Changes are as fast as grab a wrench, loosen draw bar enough to slide tool holder out, put next holder in, tighten, done. It features repeatable Z offsets, and offsets can also be set off the machine without a special tool holder holder. A power draw bar really isn't needed unless one has an automatic tool changer. The only down side might be that R8 is not as strong as 30 taper, but the Tormach version is stronger than plain R8. I would, given a large budget, prefer 30 or 40 taper with a power draw bar. I believe a Quick Change spindle can be drilled to use normal (CAT, BT, NMTB) taper holders with a draw bar. The quick change spindle I got is drilled for a drawbar so the QC nut can be removed to use holders that don't have the right flange. It also has screws around the sides which are supposed to protrude in enough so the nut can't back off too far, which makes it easier to insert and remove holders. Put the wrench on, pull about 1/3 turn to the stop, swap tool then flip the wrench around and push it back. I'll need to replace those screws if I want that to work. Works OK without the stop. The neat bit of an NMTB taper is any other 30 (or 40 or 5) taper holder will work if you have a drawbar with the right thread. Even collets for a Kearney and Treker 2D would work, though they don't have notches for the drive lugs. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On Tue, 12/10/13, Gene Heskett ghesk...@wdtv.com wrote: Agreed Andy, my MT2 is a PIMA. And hell on spindle bearings since you have to seriously beat the drawbolt to loosen it. Cheers, Gene -- That's why I use a ball joint separator (AKA pickle fork) on my little Chinese drill/mill. Fits between the spindle nose and the endmill holder. Takes little effort to pop it loose, of course with the drawbar loosened first. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On Tue, 12/10/13, Stephen Dubovsky smdubov...@gmail.com wrote: Subject: Re: [Emc-users] Acra CNC refit progress. To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Date: Tuesday, December 10, 2013, 2:55 PM On Tue, Dec 10, 2013 at 1:50 PM, Dave Cole linuxcncro...@gmail.com wrote: I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. Why? R8 uses a taper angle of 16.85deg. NMTB/QC30 uses 16.5943deg [both from wikipedia]. Both of them the taper face is the gauge line (they don't seat on a flat face or anything.) Both have 1.25 max taper diameters. They are basically identical. So if you can get repeatable pull/torque both should seat just as repeatably. SMD R8 is mainly used for collets instead of tool holders. If you're doing all one off stuff or will use a single setup for a production run then it's not a big deal. If you're constantly swapping tools then collets are a pain. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On Tuesday 10 December 2013 20:13:46 Gregg Eshelman did opine: On Tue, 12/10/13, Gene Heskett ghesk...@wdtv.com wrote: Agreed Andy, my MT2 is a PIMA. And hell on spindle bearings since you have to seriously beat the drawbolt to loosen it. Cheers, Gene That's why I use a ball joint separator (AKA pickle fork) on my little Chinese drill/mill. Fits between the spindle nose and the endmill holder. Takes little effort to pop it loose, of course with the drawbar loosened first. There is not enough of the mT2 collet below the spindle to allow a pickle fork to gain a purchase. A flange on the end would make the pickle fork tines too thin to survive the music. Its a toy... -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.cl ktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Genes Web page http://geneslinuxbox.net:6309/gene The life of a repo man is always intense. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 12:28 PM, andy pugh wrote: On 10 December 2013 20:13, Kirk Wallace kwall...@wallacecompany.com wrote: I would, given a large budget, prefer 30 or 40 taper with a power draw bar. My power draw-bar cost me £40, and half of that was because I decided to anodise the parts. (My mill was 30 INT as delivered, and is now using BT30 tooling) The Tormach power drawbar system for TTS looks reasonably easy to copy. I hated the time spent to operate the MT3 spindle on the previous mill out of all proportion to the time it actually took. My thinking is the cost would be in getting or making a 30 taper spindle to replace the R8. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 12:50 PM, Dave Cole wrote: I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. So while you can change tools quickly, how much time does re-referencing the Z axis use on repetitive parts? Why do you say that? You can get end mill holders for R8, and they are as repeatable as any other tool holder. Yes, collets won't give you repeatable length, of course. I have a whole tray of end mill holders, and rarely use the collets. Jon -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
This discussion reminded me That I have one of these if someone wants to try it http://i1028.photobucket.com/albums/y342/tcninja12/Mobile%20Uploads/image_zps00648bad.jpg On Dec 10, 2013, at 7:20 PM, Kirk Wallace kwall...@wallacecompany.com wrote: On 12/10/2013 12:28 PM, andy pugh wrote: On 10 December 2013 20:13, Kirk Wallace kwall...@wallacecompany.com wrote: I would, given a large budget, prefer 30 or 40 taper with a power draw bar. My power draw-bar cost me £40, and half of that was because I decided to anodise the parts. (My mill was 30 INT as delivered, and is now using BT30 tooling) The Tormach power drawbar system for TTS looks reasonably easy to copy. I hated the time spent to operate the MT3 spindle on the previous mill out of all proportion to the time it actually took. My thinking is the cost would be in getting or making a 30 taper spindle to replace the R8. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 07:21 PM, Jon Elson wrote: On 12/10/2013 12:50 PM, Dave Cole wrote: I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. So while you can change tools quickly, how much time does re-referencing the Z axis use on repetitive parts? Why do you say that? You can get end mill holders for R8, and they are as repeatable as any other tool holder. Yes, collets won't give you repeatable length, of course. I have a whole tray of end mill holders, and rarely use the collets. Jon For many years, I only used collets in my Bridgeport because I didn't know any better. It also took working for someone else find out about lathe soft jaws and the spider for trimming them. By the time I get the hang of this CNC stuff, it will be time to go. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 10:21 PM, Jon Elson wrote: On 12/10/2013 12:50 PM, Dave Cole wrote: I've got an Erickson QC30 on my Bridgeport CNC mill. R8 does not maintain any accurate Z reference after a tool change. So while you can change tools quickly, how much time does re-referencing the Z axis use on repetitive parts? Why do you say that? You can get end mill holders for R8, and they are as repeatable as any other tool holder. Yes, collets won't give you repeatable length, of course. I have a whole tray of end mill holders, and rarely use the collets. Jon I refuse to explain my erroneous thinking. ;-) Kurts right. Dave -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Acra CNC refit progress.
On 12/10/2013 8:46 PM, tcninj...@yahoo.com wrote: This discussion reminded me That I have one of these if someone wants to try it http://i1028.photobucket.com/albums/y342/tcninja12/Mobile%20Uploads/image_zps00648bad.jpg What is the taper on those holders? -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
